Question

1. choose the best answer. which of these is the correct bohr model for aluminum?

Explanation:

1. First, find aluminum's atomic number: Aluminum (Al) has an atomic number of 13, meaning it has 13 electrons.
2. Apply electron shell filling rules: The first shell holds max 2 electrons, the second holds max 8, and the third holds the remaining electrons.
3. Calculate electrons per shell:

• Shell 1: 2 electrons
• Shell 2: 8 electrons
• Shell 3: $13 - 2 - 8 = 3$ electrons

1. Match to the options: The third model has 2 electrons in the innermost shell, 8 in the middle, and 3 in the outermost shell, totaling 13 electrons.

Answer:

The third option (the model with 2 inner electrons, 8 middle electrons, and 3 outer electrons)